Analysis

  • max time kernel
    101s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    18/05/2023, 01:58

General

  • Target

    DD362A4A2078D3C41AFBCAEE201141DC98A5CE2F2AF35968FDBCB89704ACE577.rtf

  • Size

    35KB

  • MD5

    f2881ed757ae5cadc95c24e27e62b1b4

  • SHA1

    ff02ffee9ca4ca7040f891894172b8a27082642c

  • SHA256

    dd362a4a2078d3c41afbcaee201141dc98a5ce2f2af35968fdbcb89704ace577

  • SHA512

    b8c539b9d735dfd7a4f286d5a174c1ff78ecde5cf46a29ee81553ad15811c816dcc4ad6695ea02693f20090af3a6c884cd837d13b728e77e7a0516b2de2143f9

  • SSDEEP

    768:iFx0XaIsnPRIa4fwJMqp5Uogaija/wi/X4NEqBlpx904:if0Xvx3EMS59ga1wi/IWqBlpL04

Score
8/10

Malware Config

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\DD362A4A2078D3C41AFBCAEE201141DC98A5CE2F2AF35968FDBCB89704ACE577.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:916
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:524
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Launches Equation Editor
      PID:1236

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

      Filesize

      20KB

      MD5

      5767156539c353e7bf87666bac3287c9

      SHA1

      17818adf2682c767eb1ca4a79c581d8cc2a08408

      SHA256

      e885281c041cce47d7d566c6bb86ef81aaa102c30ea8a3b9f79359f63ff26d18

      SHA512

      1993e37a7af741d7307cacaa3c974ef532f27df72bf20b81fb52ec1d0c1e919f522e08f940e8b6f7762dd4bcf06fbd48a647d3994fedde4ffeaf1a1d0d1eeef2

    • memory/916-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/916-80-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB